[paukiatwee]

Not specific to DO but here are some checklist might helpful to you.

1.1. Elastic IP - Allow you to remap IP to another instance, this is very important for HA where you can bring up another server and remap IP to new instance.

1.2. Alternative to elastic IP is load balancer

2. Bock storage - Allow you to use persistent storage with redundancy. Important to keep data safe when some instances down. You can bring up new instance and start using existing block storage.

DO support all of the above so DO is good enough for production usage. If you need latency sensitive services like RDS, maybe you can consider AWS. I know some people use RDS with compute on other provider like DO.